ok i have an 89 iroc l98 tpi stock heads cam i have a stealth ram 24# injectors long tube headers so my car has been sitting for a month or 2 i go to start it and it cranks but will not run. i have 42 psi fuel pressure (new pump) i installed a new ac delco ign module and a new pickup coil heres the problem good fuel i have spark but it looks week i have an injector pulse also
possibly week the niod light is verry dim when cranking and the spark lookd orange i have good compression. no start. now if i shoot fuel from my nitrous plate with the bottle turned off while cranking it will start and run like #$@%
and putter out
i have thrown parts i had in my tool box on it still with no luck
ing module
pick up coil
fuel pump

my cap rotor and wires are not that old and the injectors are not old\

also in the 2 months since i last drove it i did not have a shrader valve in the fuel rail (open to atmosphere) dont think it has antthing to do with it but fyi

last time i drove the car i had no problems i have had this car for 7 years and never had any problems with it at all now i cant make heads or tails with it
any info or suggestion would be great
thanx in advance chris imurderfords@nc.rr.com

 

remove the rail, remove injectors, flush rail with brake cleaner, dry and re-install.
from what you say it has everything it needs except fuel spray. it has pressure, pulse and spark (although weak may be due to low battery. charge it up while doing rail job)

 

What keeps the fuel from coming out if the fuel pressure port is open to atmosphere?

 

my nos wet kit

 

The NOS is injected through the fuel rail pressure port?

 

the added fuel is

 

ok installed new injectors new cap/rotor/ plugs still no start spark/ injector puls still looks week cleaned fuel rail and wont run on starting fluid
timing is correct have compression timing chain and cam r good WTF

 

what kind of voltage do you have at the ECM? (batt and ignition)
what do you mean by "weak"?

 

my spark is ok it will run off carb cleaner and i was using a noid light for the injectors and it didnt seem like it was flashing very bright